The Australian Parliament was hacked by a group based in Iran, a hitherto unknown security firm has claimed, adding that the Mabna Institute, which was backing the person or people involved, had also been implicated in attacks on the US and other Western countries.

An American security professional has questioned whether the attack on the Australian Parliament's network and the systems of the three main political parties were indeed a sophisticated attack sponsored by a nation state as claimed by Australian Prime Minister Scott Morrison.